Custom DSLs
A domain-specific language, or DSL, is a language that is specialized for one particular area. For example, online issue trackers, such as Jira, often come with a "little language" for querying, designed to make it easier to perform advanced searches. In programming, we most often see DSLs in the form of an API that has been tailored to make usage of the API easier.
Since Kotlin provides many features around the use of functions-named parameters, default parameters, operator overloading, and infix functions, to name a few-it makes Kotlin a powerful tool for creating your own custom DSL.
In this section, we will create a custom DSL used for assertions. This kind of functionality is often used in testing or behavior-driven development. ...
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